Code of Practice for In-service Inspection and Testing of Electrical Equipment. 4th Edition

Transcription

1 Code of Practice for In-service Inspection and Testing of Electrical Equipment 4th Edition

2 Published by The Institution of Engineering and Technology, London, United Kingdom The Institution of Engineering and Technology is registered as a Charity in England & Wales (no ) and Scotland (no. SC038698). The Institution of Engineering and Technology is the new institution formed by the joining together of the IEE (The Institution of Electrical Engineers) and the IIE (The Institution of Incorporated Engineers). The new Institution is the inheritor of the IEE brand and all its products and services, such as this one, which we hope you will find useful. 1994, 2001, 2007, 2012 The Institution of Engineering and Technology First published 1994 ( ) Second edition 2001 ( ) Reprinted with new cover 2003 Third edition 2007 ( ) Reprinted 2008, 2009, 2010, 2012 Fourth edition 2012 ( ) This publication is copyright under the Berne Convention and the Universal Copyright Convention. All rights reserved. Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may be reproduced, stored or transmitted, in any form or by any means, only with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms of licences issued by the Copyright Licensing Agency. Enquiries concerning reproduction outside these terms should be sent to the publishers at The Institution of Engineering and Technology, Michael Faraday House, Six Hills Way, Stevenage, SG1 2AY, United Kingdom. Copies of this publication may be obtained from: The Institution of Engineering and Technology PO Box 96, Stevenage, SG1 2SD, UK Tel: +44 (0) sales@theiet.org While the author, publisher and contributors believe that the information and guidance given in this work are correct, all parties must rely upon their own skill and judgement when making use of them. The author, publisher and contributors do not assume any liability to anyone for any loss or damage caused by any error or omission in the work, whether such an error or omission is the result of negligence or any other cause. Where reference is made to legislation it is not to be considered as legal advice. Any and all such liability is disclaimed. ISBN Typeset in the UK by Carnegie Book Production, Lancaster Printed in the UK by Cambrian Printers Ltd, Aberystwyth

3 Contents Cooperating organizations 9 Acknowledgements 10 Preface 11 Introduction 13 Part 1 Administration of Inspection and Testing 17 1 Scope Users of electrical equipment, persons managing a maintenance scheme, persons performing inspections and tests, and other duty-holders Users of electrical equipment Persons managing a maintenance scheme (duty-holders) Persons undertaking the practical inspection and testing of electrical equipment Other duty-holders such as landlords, company directors, managers and building services managers etc Equipment Medical electrical equipment Premises Voltages and phases Summary of the objectives of this Code of Practice 21 2 Definitions 23 3 The law The legislation The Health and Safety at Work etc. Act The Management of Health and Safety at Work Regulations The Provision and Use of Work Equipment Regulations The Electricity at Work Regulations Workplace (Health, Safety and Welfare) Regulations The Housing Act 2004 (England and Wales) The Housing (Scotland) Act The Electrical Equipment (Safety) Regulations Waste Electronic and Electrical Equipment Regulations 2006 (WEEE directive) Scope of the legislation 37 3

4 3.3 Who is responsible? Maintenance 38 4 Fixed electrical installation Means of earthing RCD protection Sufficient socket-outlets should be provided Damaged accessories Specialized installations 41 5 Types of electrical equipment Portable appliances or equipment Movable appliances or equipment (sometimes called transportable) Hand-held appliances or equipment Stationary appliances or equipment Fixed equipment or appliances Inspection and testing of fixed equipment or appliances Appliances or equipment for building-in Information technology equipment Extension leads and RCD extension leads Multiway adaptors and RCD adaptors Surge protective devices 46 6 The electrical tests Testing throughout the life of equipment Manufacturer s type testing Manufacturer s production testing In-service inspection and testing Testing after repair 48 7 In-service inspection and testing Inspection Risk-based assessments Categories of inspection and testing Frequency of inspection and testing through risk-based assessments Review of frequency of inspection and testing 53 8 Procedures for in-service inspection and testing The basic requirement Test equipment Documentation Labelling Damaged or faulty equipment User responsibilities Availability of records 57 4

5 9 Training Requirements and responsibilities The user The duty-holder or manager The inspector The test operative Training Experience The person repairing faulty equipment Test instruments Safety of test equipment Test instruments Test probes and leads Test probes and leads for use in conjunction with a voltmeter, multimeter, electrician s test lamp or voltage indicator Portable appliance test instruments Three-phase equipment Low resistance ohmmeters (for earth continuity testing) Insulation resistance ohmmeters (applied voltage method) Instrument accuracy 67 Part 2 Inspection and Testing (including user checks) Equipment construction types Class I Class I typical construction showing basic insulation and earthed metal Class I construction showing the use of air as a basic insulation medium Class I construction incorporating unearthed metal separated from live parts by basic and supplementary insulation Class I construction incorporating unearthed metal separated from live parts by basic insulation and earthed metal Class II Class II equipment with a substantial enclosure of insulating material comprising basic and supplementary insulation Class II equipment with a substantial enclosure of reinforced insulating material Class II equipment with a substantial enclosure of insulating material the insulation construction includes air Class II equipment with unearthed metal in the enclosure, separated from live parts by basic and supplementary insulation Class II equipment with unearthed metal separated from live parts by reinforced insulation Class II equipment with unearthed metal separated from live parts by basic and supplementary insulation including air gaps Metal-encased Class II equipment 78 5

6 11.3 Class III Class 0 and 0I Class 0 equipment Class 0I equipment Types of inspection and testing The user check The formal visual inspection Manufacturer s instructions Suitability of the equipment for the environment Switching of equipment Functional switching Isolation and switching off for mechanical maintenance Emergency switching User feedback The equipment Equipment failing the formal visual inspection Recording the formal visual inspection Combined inspection and testing Preliminary inspection Test procedures In-service tests The earth continuity test The insulation resistance test Protective conductor/touch current measurement Functional checks Damaged or faulty equipment Appliance lead sets Extension leads, multiway adaptors and RCD adaptors Extension leads RCD extension leads Multiway adaptors and RCD adaptors High protective conductor currents Replacement of appliance flexes Plug fuses Equipment that cannot be located New and third party equipment New equipment and appliances Second-hand equipment and appliances Hired equipment 103 6

7 Part 3 Appendices 105 I British Standards 107 II Legal references and notes 109 II.1 Health and Safety at Work etc. Act II.2 The Electricity at Work Regulations II.3 Management of Health and Safety at Work Regulations II.4 Provision and Use of Work Equipment Regulations II.4.1 General 112 II.4.2 Maintenance 112 II.4.3 Inspection of work equipment that poses electrical risks 112 II.4.4 Specific risks 113 II.4.5 Information and instructions 113 II.4.6 Training 113 II.4.7 Isolation from sources of energy 113 II.4.8 Maintenance operations 113 III The Electricity at Work Regulations 115 III.1 Regulation 4: Systems, work activities and protective equipment 115 III.1.1 Regulation 4(2) 115 III.1.2 Regulation 4(3) 116 III.2 Regulation 5: Strength and capability of electrical equipment 116 III.3 Regulation 6: Adverse or hazardous environments 116 III.4 Regulation 7: Insulation, protection and placing of conductors 117 III.5 Regulation 8: Earthing or other suitable precautions 117 III.6 Regulation 10: Connections 117 III.7 Regulation 12: Means of cutting off the supply and for isolation 118 III.8 Regulation 13: Precautions for work on equipment made dead 118 III.9 Regulation 14: Work on or near live conductors 119 III.10 Regulation 15: Working space, access and lighting 119 III.11 Regulation 16: Persons to be competent to prevent danger and injury 119 III prevent danger or, where appropriate, injury III.11.2 Technical knowledge or experience 120 III.11.3 Allocation of responsibilities 120 III.11.4 Supervision 120 IV Summary of legislation and guidance 121 V Model forms for in-service inspection and testing 125 Form V.1 Equipment register 126 Form V.2 Equipment formal visual and combined inspection and test record 127 Form V.3 Equipment labels 129 Form V.4 Repair register 130 Form V.5 Faulty equipment register 131 Form V.6 Test instrument record 132 7

8 VI Resistance of flexible cables 133 VII Checks to be made on a plug, a cable and an extension lead 135 VIII Guide to isolation procedures 141 Index 143 8

9 Cooperating organizations The Institution of Engineering and Technology wishes to acknowledge the contribution made by the following representatives of organizations in the preparation of this Code of Practice. Association for Professional Appliance Testing T.J. Dyster Association of Manufacturers of Domestic Appliances (AMDEA) S. MacConnacher BEAMA Installation Ltd M. Mullins P. Sayer IEng MIET GCGI British Cables Association (BCA) C.K. Reed IEng MIET City & Guilds Mr P. Tanner MIET LCGI Electrical Contractors Association (ECA) G. Digilio IEng FIET Electrical Safety Council S. Curtler IEng MIET GCGI GAMBICA Association Ltd J. Wallace MPhil BSc M.D. Moore Health and Safety Executive (HSE) K. Morton BSc CEng FIET Institution of Engineering and Technology (IET) M. Coles BEng(Hons) MIET NAPIT B. Allan BEng (Hons) CEng MIET SELECT (Electrical Contractors Association of Scotland) D. Millar IEng MIET B. Cairney IEng MIET Revising author, compilation and editing R. Townsend CMS MIET 9

10 Acknowledgements References to British Standards are made with the kind permission of BSI. Complete copies can be obtained from: BSI Customer Services 389 Chiswick High Road London W4 4AL Tel: +44 (0) Fax: +44 (0) References to HSE publications are made with the kind permission of the HSE. Copies of publications can be obtained from: HSE Books PO Box 1999 Sudbury Suffolk CO10 2WA Tel: +44 (0) Fax: +44 (0) Web: Further information is available from the HSE website ( 10

11 Preface The objective of this Code of Practice is to give advice on in-service inspection and testing to determine whether electrical equipment is fit for continued service or if maintenance or replacement is necessary. The main changes in this edition of the Code of Practice include clarification of which equipment is covered, the inclusion of hired and second-hand equipment and a change in the scope. In addition, there is an explanation of the risk assessment required to determine frequencies between inspection and testing, if it is required. Information on microwave leakage testing is not within the remit of this Code of Practice, because it does not directly relate to electrical safety. For this reason microwave inservice leakage testing has been removed. Production testing, previously included in this Code of Practice, has been removed as it is not relevant to in-service inspection and testing. Changes have been made to the initial frequencies in Table 7.1, to reflect information made available from equipment manufacturers, which is based on historic test results. This Code of Practice does not cover in-house inspection and testing of equipment or appliances that are used for commercial gain hire purposes. Equipment hire companies should refer to the Hire Association of Europe (HAE) ( and Event Hire Association (EHA) ( whose document HAEEST2012: Guidance on Electrical Safety Testing in the Hire Industry gives information on in-service inspection, maintenance, return to service after repair and regimes for hire equipment prior to its release to customers/clients. 11

12 12

13 Introduction Why is it necessary to maintain electrical equipment? Electric shock can kill or seriously injure. This is one of the hazards that electrical safety legislation is intended to protect against. Many serious shocks occur when the current flow is from hand to hand, because the route the current takes is through or near the heart. The Electricity at Work Regulations requires, in Regulation 4(2), that: As may be necessary to prevent danger, all systems shall be maintained so as to prevent, so far as is reasonably practicable, such danger. Regulation 4(2) is concerned with the need for maintenance to be done in order to ensure safety of the system if danger would otherwise result. The quality and frequency of maintenance should be sufficient to prevent danger, so far as is reasonably practicable. Regular inspection of equipment is an essential part of any preventive maintenance programme. Practical experience of the use of equipment and its environment may indicate an adjustment to the frequency with which preventive maintenance needs to be carried out. This is a matter for the judgement of the responsible person or dutyholder, who should seek all the information needed to make an informed decision including reference to the manufacturer s guidance. Although the Electricity at Work Regulations does not require records of maintenance to be kept, it is recommended that records of maintenance, including test results, should be kept throughout the working life of the electrical equipment to enable ff the condition of the equipment to be monitored, ff the effectiveness of the maintenance policies to be assessed, ff the demonstration that an effective maintenance system is in place, and ff the duty-holder responsible for the inspection and testing regime to assess the future frequency required between formal visual inspections and any combined inspections and tests. What should be maintained? All electrical systems and equipment should be maintained if danger would otherwise arise (see Figure 1). Other than the fixed installation, which is considered to be the installation from the meter point to the socket-outlet, or fuse connection unit, all electrical equipment in an installation, whether permanently connected or connected by a plug and socket-outlet, 13

14 S D S D S D S D S D US D TTFigure 1 Examples of equipment covered by this Code of Practice RF 14

15 should be inspected and tested in accordance with the recommendations contained in this Code of Practice. Items of heavy plant, including air handling units (AHUs), heating ventilation and air conditioning (HVAC) systems, and other items of integrated plant and their associated systems, are not covered by this Code of Practice. These types of systems should form part of a specialized maintenance and inspection routine. The connecting cables and junction boxes for integrated plant should be inspected and tested during the electrical installation s periodic inspection regime and a report of its condition given in the Electrical Installation Condition Report. Note: Self-contained or two-part air conditioners and climate control units, which are not AHU or HVAC systems, are within the scope of this Code of Practice. BS 7671 GN3 The fixed installation should be periodically inspected and tested to ensure its satisfactory condition for continued use as required by BS 7671:2008 (2011) Requirements for Electrical Installations, 17th Edition of the IET Wiring Regulations. Guidance on the requirements of BS 7671, concerning inspection and testing of the fixed electrical installation, is given in the IET s Guidance Note 3: Inspection & Testing (GN3). Who has responsibilities? The following people have responsibility for electrical systems and equipment: ff users of electrical equipment (whose responsibilities include user checks) ff duty-holders with responsibility for electrical maintenance who may not necessarily have detailed technical knowledge ff the competent person carrying out the formal visual inspection and the inspections and tests ff other duty-holders such as company directors, managers or building services managers ff hirers and suppliers of hired equipment (additional advice can be found on the Trading Standards Institute website, ff landlords and property management companies in control of Houses in Multiple Occupation (HMOs). What needs to be done to comply with the relevant requirements of the Electricity at Work Regulations? The requirements of the Electricity at Work Regulations 1989 can be met by 1 performing in-service inspection and testing, which consist of three activities: i user checks ii formal visual inspections (without tests) iii combined inspections and tests (although the Electricity at Work Regulations do not require the keeping of records, up-to-date information can be a means of showing that a maintenance scheme exists) 2 performing maintenance or, if necessary, replacing the defective item of equipment (depending upon the results of the in-service inspection and testing), and 3 keeping up-to-date records that can be a means of showing compliance. 15

16 TTFigure 2 HSR25: Memorandum of Guidance on the Electricity at Work Regulations 1989 [Courtesy of the HSE] Information on the Electricity at Work Regulations can be found in the Health and Safety Executive (HSE) publication Memorandum of Guidance on the Electricity at Work Regulations 1989 (see Figure 2). This publication is now available as a free download from Background to the Code of Practice To encourage free trade within the European Union, existing national standards are being harmonized and converted to European standards. Compliance with harmonized European standards gives assurance to purchasers that appliances and equipment have been designed and constructed to a standard that ensures in normal use, as intended by the manufacturer, they function safely. In order to check compliance, manufacturers have to perform a series of tests on the appliance and its components as required by the standard. The appliance is required to pass these tests if it is to be said that it complies with the standard. A list of some of the safety standards for electrical equipment is given in Appendix I. The tests detailed in these standards are generally not suitable for in-service testing. This Code of Practice recommends in-service inspections and tests that can be applied generally to equipment and appliances in normal use. Routine manufacturers tests are not required for general in-service testing, but may be applied to appliances after repair. Layout of the Code of Practice Part 1 provides guidance on what work should be done in order to comply with the applicable legislation, including the Electricity at Work Regulations, and whether this work can be carried out in-house. Advice is included on the law, procedures, documentation and training. Part 2 is written for those carrying out the practical work and explains the details of the inspections and tests. Part 3 comprises a series of appendices containing information and guidance and includes model forms that allow records to be kept in order to demonstrate that an effective system of maintenance is in place. 16

17 Index Note: Entries refer to chapter and section numbers; Appx=Appendix; n refers to the notes following a table. A accessible metal part, definition Chap 2 accessories, definition Chap 2 accuracy, test instruments 10.3; 10.5 adaptors, multiway 5.9; ; Table 15.1 administrators responsibilities 1.1.2; 9.3 adverse environments: see hazardous locations appliance, definition Chap 2 appliance lead sets: see lead sets ASTA mark 15.13; Appx VII.1 B basic insulation Chap 2 basic protection Chap 2 Batteries Directive battery operated equipment Table 7.1 n6 British Standards Appx I BS ; Appx VII.1 BS ; Appx VII.1 BS 1363A Appx VII.1 BS 6360 Appx VI.1 BS 6500 Appx VI.1 BS 7071 Table 15.5 BS 7288 Table 15.5 BS ; 11.3; ; ; BS EN ; ; BS EN BS EN BS EN ; 15.11; Table 15.2 n3 BS EN ; Table 15.5 BS EN ; Table 15.5 BS EN ; BS EN ; 10.4 BS EN built-in equipment/appliances 5.6 business equipment isolation ; 15.1 see also IT equipment C cable reels Appx VII.3 cables: see flexible cables calibration, test instruments 10.5 catering equipment Table

18 Index CE marking 16.2 children s rides Table 7.1 n3 Christmas tree lights ; circuit protective conductor (cpc) Chap 2 Class 0 equipment Chap 2; Class 0I equipment ; Class I equipment 11.1 definition Chap 2 earth continuity testing 15.4 frequency of inspection and testing Table 7.1 insulation resistance Table 15.2 protective conductor/touch current test 15.6; Table 15.3 Class II equipment 11.2 definition Chap 2 frequency of inspection and testing Table 7.1 insulation resistance Table 15.2 protective conductor/touch current test 15.6; Table 15.3 Class III equipment 11.3 definition Chap 2 insulation resistance Table 15.2 protective conductor/touch current test Table 15.3 clearance distance combined inspection and testing Chap 15; 6.4; 7.2; Table 7.1 appliance flexes appliance lead sets 15.9 damaged or faulty equipment 15.8 earth continuity testing 15.4 equipment with high protective conductor currents extension leads frequency of inspection and testing 7.4; Table 7.1 insulation resistance testing 15.5 multiway adaptors plug fuses preliminary inspection 15.1 RCD adaptors requirements 15.3 safe working practices Chap 15 sequence of testing 15.3 unlocated equipment combustible dust: see hazardous locations commercial kitchens Table 7.1 competent person Chap 2 see also test operatives computer equipment: see IT equipment connections Appx III.6; Appx VII.1 construction sites Table 7.1 contact resistance 10.3 cooking appliances Table 15.2 n1 creepage path crocodile clips 10.3 cross-sectional areas appliance flexes Table 15.6 extension leads Table 15.4 current-using equipment Chap 2 D damaged equipment 4.4; 8.5; 15.8 recurring damage 7.3;

19 Index register Appx V.5 user checks Chap 13 danger, definition Chap 2 dielectric strength testing 6.3; 15.3 direct contact Chap 2 disconnection: see isolation of installation documentation Appx V; 8.3 equipment registers 8.3; Appx V.1 faulty equipment Appx V.5 model forms Appx V repair register 8.3; Appx V.4 responsibilities 9.3 test instruments 10.5; Appx V.6 test records 8.3; Appx V.2 double insulation Chap 2 duty-holders 1.1.2; responsibilities 7.3; 8.3; 9.3 risk-based assessments E earth, definition Chap 2 earth continuity testing 10.3; 15.4 earthing definition Chap 2 equipment with high protective conductor currents protective 11.1 regulations Appx III.5 Electrical Equipment (Safety) Regulations electrical equipment, definition Chap 2 electrical installation, definition Chap 2 electric blankets electric drills 15.6 Electricity at Work Regulations 1989 Appx III; 3.1.4; Appx II.2 frequency of inspection and testing 7.3 maintenance of equipment 3.3; 8.1 training 9.1 electric shock Chap 2; 5.3 electric strength tests see also insulation resistance testing EMC filters 15.11; Table 15.2 n emergency stopping emergency switching enclosure, definition Chap 2 equipment labels Appx V.3 equipment registers 8.3 model form Appx V.1; Appx V.5 test instruments 10.5; Appx V.6 equipment types 1.2 explosive atmospheres: see hazardous locations exposed-conductive-part Chap 2 extension leads 4.3; 5.8; cross-sectional areas Table 15.4 earth continuity resistance Table 15.1 maximum length Appx VII.3; Table 15.4 user checks Table 13.1 visual inspection Appx VII.3 extra-low voltage: see nominal voltage 145

20 Index F fault, definition Chap 2 fault protection Chap 2 faulty equipment 8.5; 15.8 register Appx V.5 fixed electrical installations Chap 4 fixed equipment Chap 2 fixed equipment/appliances 5.5 flash testing: see dielectric strength testing flexible cables definition Chap 2 length 4.3 resistances Appx VI.1 user checks Table 13.1 visual inspection Appx VII.2 see also lead sets formal visual inspection Chap 14; 7.2; Table 7.1 frequency 7.4; Table 7.1 forms: see documentation frequency of inspection and testing Chap 4; 7.3; 7.4 functional checks 15.7 functional switching fuses Appx VII.1 definition Chap 2 plug ratings 14.1; user checks 14.5 G no entries H hand-held appliances/equipment Chap 2; 5.3 frequency of inspection and testing 7.3 protective conductor/touch current test Table 15.3 hazard, definition Chap 2 hazardous locations 4.5; 14.2; Appx III.3 Health and Safety at Work etc. Act ; 3.3; Appx II.1 Health and Safety Executive: see HSE publications health and safety legislation Appx II heating appliances Table 15.2 n1; Table 15.3 high protective conductor currents hi-pot testing: see dielectric strength testing hired equipment 16.3; Table 7.1 n6 hotels Table 7.1; Table 7.1 n5,6 houses in multiple occupation (HMO) definition Chap 2 Housing (Scotland) Act Housing Act 2004 (England and Wales) Housing Health and Safety Rating System (HHSRS) HSE publications Appx IV.4 GS38: Electrical test equipment for use by electricians Chap 15; ; Appx IV.3 HSR25: Memorandum of Guidance on the Electricity at Work Regulations 8.3; Appx IV.1 I IET Guidance Notes 2: Isolation & Switching Appx VIII 146

21 Index 3: Inspection & Testing Chap 4; Appx IV.3 indirect contact Chap 2 industrial equipment Table 7.1 Ingress Protection (IP) code Chap 2 inspection frequency Chap 4; 7.3 inspections: see combined inspection and testing; formal visual inspection inspectors: see test operatives instructed person Chap 2 insulation, definition Chap 2 insulation-encased Class II 11.2 insulation resistance testing 10.2; 10.4; 15.3; 15.5 IT and similar equipment 15.5; Table 15.2 n3 IP (Ingress Protection) code Chap 2 isolating transformers 11.3 isolation of installation Chap 2; Appx VIII for maintenance regulations Appx II.4.7; Appx III.7 for testing Chap 15 IT equipment 5.7 disconnection for inspection 15.1 earth continuity testing 15.4 insulation resistance testing 15.5; Table 15.2 n3 protective conductor/touch current test 15.6 switching off for maintenance J no entries K kettles 15.6 L labelling 8.4 damaged or faulty equipment 15.8; Appx V.3 equipment with high protective conductor currents laptop computer power supply units (PSUs) 15.4; 15.5 lead sets Chap 2; 15.9; earth continuity testing Table 15.1 visual inspection Appx VII.2 leakage current Chap 2 leakage test 10.2; 10.4 leased equipment 16.3 legislation Chap 3; Appx II; Appx IV live part Chap 2 live working Chap 15; Appx III.9 locations of increased risk: see hazardous locations low voltage: see nominal voltage luminaires Chap 2; Table 13.1 M maintenance isolation and switching off regulations 3.1.5; 3.4; Appx II.4.2; Appx II.4.8 Management of Health and Safety at Work Regulations ; Appx II.3 managers responsibilities 1.1.4; 9.3 manufacturer s testing 6.2; 6.3 means of earthing Chap 2; 4.1 medical electrical equipment

22 Index metal-encased Class II 11.2; mixed use locations 7.3 movable appliances/equipment 5.2 movable equipment Chap 2 see also portable appliances/equipment multimeters multiway adaptors 5.9; ; Table 15.1 multiway extension leads 4.3; N new equipment/appliances 16.1 nominal voltage Chap 2 non-flexible cables Appx VII.2 O offices Table 7.1 ohmmeters 10.3 optical fibre systems 15.1 ordinary person, definition Chap 2 outdoor equipment 4.2; P PAT (portable appliance test) instrument Chap 2 personnel, responsibilities and training Chap 9 petrol filling stations 4.5 phases 1.4 plug-in portable RCD devices 4.2 plugs formal visual inspection 14.5 fuses 15.13; Appx VII.1 user checks Table 13.1 visual inspection Appx VII.1 portable appliances/equipment Chap 2; 5.1 protective conductor/touch current test Table 15.3 used outdoors 4.2; see also hand-held appliances/equipment portable appliance test (PAT) instruments Chap 2; 10.2 portable RCD devices 4.2 premises 1.3 production testing (manufacturer s) 6.3 protective conductor current Chap 2 protective conductor current test 10.2; 10.4; 15.3; 15.6 protective conductors Chap 2 nominal resistances Appx VI protective earthing 11.1 see also earth continuity testing Provision and Use of Work Equipment Regulations (PUWER) ; 3.3; 3.4; Appx II.4 public used equipment Table 7.1 children s rides Table 7.1 n3 PUWER: see Provision and Use of Work Equipment Regulations (PUWER) Q no entries R RCD (residual current device) Chap 2 RCD adaptors 4.2; 5.9;

23 Index earth continuity resistance Table 15.1 user checks Table 13.1 RCD extension leads 5.8; RCD-protected socket outlets Table 15.5 RCD protection 4.2 record keeping: see documentation recurring damage 7.3; 7.4 register of equipment: see equipment registers reinforced insulation Chap 2 Class I equipment 11.1 Class II equipment ; ; repaired equipment, testing 6.5 repairers, training and experience 9.6 repair register 8.3; Appx V.4 residual current device: see RCD (residual current device) residual operating current 4.2 resilient plugs Appx VII.1 resistances, protective conductors Appx VI responsibilities 3.3 for documentation 9.3 test supervisor s Appx III.11.4 users 1.1.1; 8.6; 9.2 risk, definition Chap 2 risk assessment Chap 2; 7.1.1; Appx II.3; Appx II.4.3 rotating/moving machines 15.6 S safety extra-low voltage: see SELV (separated extra-low voltage) safe working practices Chap 15; Appx III.9 Appx III.11 see also health and safety legislation schools Table 7.1; Table 7.1 n4,6 second-hand equipment/appliances Chap 2; 16.1 separated extra-low voltage (SELV) Chap 2; 11.3 shops Table 7.1 skilled person Chap 2 SMPS (switched mode power supply) 15.4; 15.5 socket-outlets definition Chap 2 number 4.3 outdoors 4.2 RCD adaptors 4.2; 5.9 RCD-protected Table 15.5 replacement 4.4 user checks Table 13.1 soft test 10.2; 15.4; 15.6 soldering irons SPD (surge protective devices) Chap 2; 5.10; 15.5 standby power supplies stationary equipment/appliances Chap 2; 5.4 supervisor s responsibilities Appx III.11.4 supplementary insulation Chap 2 Class I equipment Class II equipment ; ; surge protective devices (SPD) Chap 2; 5.10; 15.5 switched mode power supply (SMPS) 15.4; 15.5 switching of equipment 14.3 see also isolation of installation 149

24 Index T telecommunications equipment, isolation ; 15.1 test equipment 8.2 testing categories 7.2 testing frequency Chap 4; 7.3 testing sequence 15.3 test instruments Chap 10 accuracy 10.3; 10.5 equipment registers 10.5; Appx V.6 test lamps test lead resistance 10.3 test leads test operatives Chap 15; training and experience 9.5; Appx III.11 test probes test records: see documentation test supervisor s responsibilities 9.3; Appx III.11.4 thermocouple effects 10.3 three-phase equipment 1.4; ; Table 15.2 n5 touch current Chap 2 touch current test 10.2; 10.4; 15.3; 15.6 training Chap 9; Appx II.4.6; Appx III.11 transformers: see isolating transformers transient suppression devices Table 15.2 n6 transportable equipment: see movable equipment U unearthed metal Table 15.1 n5 Class I equipment ; Class II equipment ; ; ; uninterruptible power supplies unlocated equipment user checks Chap 13; 6.4; 7.2 user feedback 14.4 user responsibilities 1.1.1; 8.6; 9.2 user training 9.2; Appx II.4.6 V visual inspection Chap 14; Appx VII; 6.4; 7.2 frequency 7.4; Table 7.1 see also user checks voltage, nominal Chap 2 voltage indicators voltages 1.4 voltmeters W Waste Electronic and Electrical Equipment Regulations 2006 (WEEE directive) work equipment 3.1.3; Appx II.4.3 Workplace (Health, Safety and Welfare) Regulations XYZ no entries 150